Cool idea, stop by 1676 in the stands and ask around, I think you'll get some volunteers.
Just a word of caution: In our present terrorist-infested, Post-9/11 world, folks get a little bit twitchy when they see folks hiding things. Especially if those things don't look like something we all consider benign. SO...just keep in mind what your 'packages' might look like to a police officer or panicky old lady with bad eyesight. And make them look not like something bad.
Capisce?